TW201636774A - Display device, terminal device, and display system - Google Patents

Abstract

This display device is provided with: a display unit that displays images; a wireless tag; a wireless communication unit that performs wireless communication with an external terminal device; and a control unit that performs switching of the operation state of the display device at least between a normal operation state and a power-saving state. When the control unit detects that, in the power-saving state, the wireless tag is communicating with the terminal device, the control unit shifts the operation state to the normal operation state, and the wireless communication unit returns to the normal operation state from the power-saving state, and establishes the wireless communication with the terminal device.

Description

Display device, terminal device and display system

The present invention relates to a display device, a terminal device, and a display system.

Conventionally, there has been a method of operating a display device such as a projector by a remote controller device independent of a display device (for example, refer to Patent Document 1). In Patent Document 1, the remote controller transmits an infrared signal, and the projector operates by receiving an infrared signal.

Further, as a device for operating the display device, it is conceivable to use a device having a wireless communication function other than a remote controller that transmits an infrared signal. Since the wireless communication is required between a plurality of devices, it is necessary to have the information necessary for the establishment of the wireless communication in advance, and the same information must be received between the display device and the device operating the display device.

In the past, a method of exchanging information necessary for establishing wireless communication by means of a wireless tag that can be read wirelessly has been proposed (for example, refer to Patent Document 2). In the configuration of Patent Document 2, the wireless communication device acquires a service provider of a WLAN (Wireless Local Area Network) by reading a NFC (Near Field Communication) tag, which is a type of wireless tag. Information, etc.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-40367

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2012-502554

In the case where the configuration described in Patent Document 2 is applied between the display device and the device operating the display device, in order to establish wireless communication, the display device must be in a state in which wireless communication is possible. Therefore, it is necessary to perform an operation of turning on the power of the display device before performing, for example, reading of the NFC tag, and there is a problem that the operation becomes complicated. Further, when the display device turns on the wireless communication function during standby, the operation becomes simple, but there is a problem that the amount of power consumption during standby increases.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to operate a display device by using a device that wirelessly communicates with a display device by suppressing the amount of power consumption during standby and simplifying the operation.

In order to achieve the above object, a display device includes: a display unit that displays an image; a wireless tag; a wireless communication unit that wirelessly communicates with an external terminal device; and a control unit that displays the display The operating state of the device is switched between at least the normal operating state and the power saving state; and when the control unit detects that the wireless tag has communicated with the terminal device in the power saving state, the control unit converts the operating state to the normal operating state, The wireless communication unit establishes wireless communication with the terminal device from the power saving state described above to the normal operation state.

According to the present invention, when the display device is in the power saving state, wireless communication between the display device and the external terminal device can be quickly started by performing the operation of reading the wireless tag. Therefore, it is possible to suppress the amount of power consumption of the display device during the period in which the wireless communication is not established, and to start wireless communication between the display device and the terminal device without performing complicated operations.

Furthermore, the present invention is the display device, wherein the wireless tag maintains at least the wireless communication setting information of the wireless communication of the wireless communication unit, and the wireless communication unit is configured to use the wireless communication setting information included in the wireless tag. Terminal device Establish wireless communication between.

According to the present invention, wireless communication can be quickly established based on information of wireless tags.

Furthermore, the present invention is the display device, wherein the wireless tag is an NFC tag and includes identification information identifying a type of the display device.

According to the present invention, the terminal device that reads the outside of the wireless tag can identify the model of the display device based on the information of the wireless tag. Therefore, for example, the terminal device can perform control corresponding to the difference in specifications caused by the model of the display device, and the convenience can be improved.

Further, the present invention is the display device, wherein the control unit supplies power to the wireless communication unit and the display unit in the normal operation state, and disconnects the wireless communication unit and the The power supply of the display unit waits for communication of the wireless tag.

According to the present invention, the amount of power consumption in a state of waiting for communication of the wireless tag can be suppressed.

According to the present invention, in the display device, the control unit is not connected to the terminal device in the wireless communication unit after the power supply to the wireless communication unit is started after the power saving state is changed to the normal operation state. When the state of the wireless communication continues, the power saving state is again converted.

According to the present invention, it is possible to suppress the amount of power consumption when the wireless communication is not established.

Further, the present invention is the display device described above, comprising: an infrared communication unit that receives an infrared signal; and the control unit can perform reception of an infrared signal by the infrared communication unit in the power saving state.

According to the present invention, communication using a wireless tag and receiving an infrared signal can be performed in a power saving state.

Moreover, the terminal device of the present invention is characterized by comprising: a tag communication unit that reads a wireless tag; and an inter-machine wireless communication unit that wirelessly communicates with an external device; a memory application; and a terminal control unit that establishes wireless communication with the external device by the wireless communication unit between the device based on the information read from the wireless tag by the tag communication unit, and from the memory The part reads and executes an application corresponding to the information read from the wireless tag, and transmits control information for controlling the external device from the inter-machine wireless communication unit.

According to the present invention, wireless communication is established between a peripheral device such as a display device and an external device by reading a wireless tag, and the external device can be controlled by the function of the application.

Furthermore, the present invention is directed to the terminal device, comprising: a display unit having a display screen; and an operation unit that accepts an operation; and the terminal control unit is displayed by the display unit by the function of the application program The operation screen of the external device is controlled, and the control information is transmitted based on an operation detected by the operation unit in the display of the operation screen.

According to the present invention, an external machine can be simply operated by using an operation screen.

Furthermore, the present invention is the terminal device, wherein the terminal control unit may execute a plurality of applications that display the different operation screens on the display unit, and read from the wireless tag by the tag communication unit. Get the information and choose to execute the above application.

According to the present invention, it is possible to select an application suitable for an external device to execute based on the information read by the wireless tag. Therefore, as an example of a wireless tag that can read a plurality of external devices, an application suitable for each external device can be executed.

Furthermore, the present invention is the terminal device, wherein the terminal control unit reads the plurality of operation screens that can be displayed by the function of the application program, and corresponds to reading from the wireless tag by the tag communication unit. The above operation screen of the information is displayed on the display unit. According to the present invention, an operation screen suitable for an external machine can be displayed based on the information read by the wireless tag. Therefore, as an external machine that can read, for example, a plurality of types The wireless tag is configured to display an operation screen suitable for each external device.

Furthermore, the present invention is the terminal device, wherein the terminal control unit executes the first application when the tag communication unit reads the wireless tag, and executes the corresponding function by the function of the first application. The second application of the information read from the above wireless tag.

According to the present invention, an application can be launched based on information read by a wireless tag, and an application suitable for an external device can be executed by the function of the application. Therefore, it is possible to install a function selected by an application corresponding to an external machine as an application. Therefore, the function corresponding to the wireless tag and the application can be further enhanced by the function of the application.

Moreover, the display system of the present invention includes: a display device; and a terminal device; and the display device includes: a display portion that displays an image; a wireless tag; a wireless communication portion that wirelessly communicates with the terminal device; a control unit that switches an operation state of the display device between at least a normal operation state and a power saving state; and the control unit switches the operation state when the wireless tag detects that the wireless tag has communicated with the terminal device in the power saving state. In the normal operation state, the wireless communication unit establishes wireless communication with the terminal device from the power saving state to the normal operation state, and the terminal device includes a tag communication unit that reads the wireless device of the display device. a wireless communication unit that communicates wirelessly with the display device; a memory unit, a memory application; and a terminal control unit that is based on information read from the wireless tag by the tag communication unit The above-mentioned inter-machine wireless communication unit and the above display device establish wireless Information, and reads out from said memory unit corresponding to the application from the wireless tag information of the read and executed, the transmission control information between the display device of said machine from the wireless communication unit.

According to the present invention, in a system including a display device and a terminal device, when the display device is in a power saving state, the wireless communication between the terminal device and the display device can be quickly started. News. Therefore, it is possible to suppress the amount of power consumption of the display device during the period in which the wireless communication is not established, and to start wireless communication between the display device and the terminal device without performing complicated operations.

1‧‧‧Display system

10‧‧‧ Terminal devices

11‧‧‧ Terminal device body

20‧‧‧Control Department (Terminal Control Department)

21‧‧‧Display Control Department

22‧‧‧Communication Control Department

23‧‧‧Application Execution Department

30‧‧‧Memory Department

31‧‧‧Application

32‧‧‧NFC setting data

33‧‧‧Contents

40‧‧‧Wireless Communication Department (Inter-machine Wireless Communication Department)

51‧‧‧Display Department

52‧‧‧ display panel

53‧‧‧ touch screen

54‧‧‧Keys

55‧‧‧Operation and Detection Department

61‧‧‧NFC Label Communication Department (Label Communication Department)

63‧‧‧ operation screen

63a‧‧‧Function icon group

63b‧‧‧ Directional icon

63d‧‧‧Function icon group

64‧‧‧ operation screen

64c‧‧‧ page switching icon

65‧‧‧ operation screen

65c‧‧‧ page switching icon

66‧‧‧Content playback screen

66a‧‧‧ screen switching icon

70‧‧‧Remote control

100‧‧‧Projector (display device)

100a‧‧‧SoC

100b‧‧‧insert terminal

101‧‧‧Projector body

105‧‧‧ busbar

110‧‧‧Projection Department (Display Department)

111‧‧‧Light source department

112‧‧‧Light modulation device

112A‧‧‧LCD panel

113‧‧‧Projection optical system

114‧‧‧Projection opening

121‧‧‧Projection Optical System Drive Department

122‧‧‧Light source drive department

123‧‧‧Light Modulation Device Driver

124‧‧‧I/F Department

125‧‧‧Image Processing Department

126‧‧‧ frame memory

130‧‧‧Control Department

131‧‧‧Projection Control Department

132‧‧‧Communication Control Department

133‧‧‧Power Control Department

151‧‧‧Memory Department

153‧‧‧Input Processing Department

154‧‧‧Infrared light receiving department

154a‧‧‧Light-receiving components

154b‧‧‧Detection circuit

155‧‧‧Operator panel

155a‧‧‧Key substrate

156‧‧‧Wireless Communications Department

158‧‧‧NFC tags (wireless tags)

158a‧‧‧Antenna

158b‧‧‧Label IC

159‧‧‧ mark

161‧‧‧Wireless communication setting information

S11~S18‧‧‧Steps

S21~S30‧‧‧Steps

S41‧‧‧ steps

S42‧‧‧Steps

SC‧‧‧ screen

Fig. 1 is a view showing a schematic configuration of a display system.

Figure 2 is a block diagram showing the construction of a terminal device.

3(A) and 3(B) are diagrams showing a configuration example of NFC setting data.

Fig. 4 is a block diagram showing an example of the configuration of the projector.

Fig. 5 is a view showing a specific configuration example of the projector.

6(A) and 6(B) are flowcharts showing the operation of the projector and the terminal device.

7(A) to (D) are diagrams showing an example of an image displayed by the terminal device.

Fig. 8 is a flow chart showing the operation of the projector of the modification.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

Fig. 1 shows a schematic configuration of a display system 1 of the present embodiment. The display system 1 of the present embodiment includes a terminal device 10 as an input device and a projector 100 as a display device.

The terminal device 10 is a portable device that is operated by a user, and is a portable device such as a mobile phone such as a smart phone, a tablet terminal, or a PDA (Personal Digital Assistants). The terminal device 10 has a flat terminal device body 11 , and a display panel 52 (display screen) is disposed on the surface of the terminal device body 11 , and a touch screen 53 for detecting a user's contact operation is disposed on the surface of the display panel 52 ( figure 2). As shown in FIG. 1, the display panel 52 is disposed on one side of the widest surface of the terminal device body 11 so as to cover almost the entire surface. Further, the display panel 52 of the present embodiment has a long rectangular shape, and the user can clearly distinguish between the long side and the short side. Further, the terminal device 10 may be provided with various buttons as input devices other than the touch screen 53.

The projector 100 projects image light on a projection object and forms a map on the surface of the projection object. image. The projection object to be projected by the projector 100 may be a flat surface or a curved surface or a concave-convex surface. However, in the present embodiment, the projection is projected on a screen SC formed in a plane. The screen SC can be fixed by a wall surface or the like, or can be a hanging or vertical screen-like screen. FIG. 1 shows the setting state of the projector 100. The projector 100 has a box-shaped projector body 101, and a projection opening 114 for projecting image light is provided on one surface of the projector body 101. The projection opening portion 114 is an opening portion for emitting light built in the projection optical system 113 (FIG. 4) of the projector main body 101. Further, an operation panel 155 is disposed on the upper surface of the projector body 101. The operation panel 155 is provided with an indicator for the user to operate the button of the projector 100 and to display the operation state of the projector 100. For example, the operation panel 155 includes a power button that switches the operation state of the projector 100 to the normal operation state and the standby state (power saving state).

The projector 100 can be operated by a remote controller 70 that transmits an infrared signal. The remote controller 70 may be used as the device constituting the display system 1 or may not be included in the display system 1. The remote controller 70 is provided with various buttons for operating the projector 100, and transmits a signal corresponding to the operation of the button to the projector 100 as an infrared signal.

Further, the projector 100 has an NFC (Near Field Communication) tag 158. The NFC tag 158 (wireless tag) is an information memory medium called an RFID (Radio Frequency Identifier) tag or a wireless tag. The NFC tag 158 stores various information in the built-in ROM, and can read the information memorized by the NFC tag 158 from the outside. The NFC tag 158 can be either an active tag that receives power from the internals of the projector 100, or a passive tag that receives power from the device that reads the NFC tag 158. In the present embodiment, an example in which the NFC tag 158 is configured as a passive tag will be described.

Further, the NFC tag 158 is a tag based on the NFC standard which is defined by the ISO standard, but other types of RFID tags such as Felica (registered trademark) may be used. For RFID tags, there are tags for wireless signals using the 125 kHz band, tags for wireless signals using the 13.56 MHz band, and tags for wireless signals using the UHF band (950 MHz band). A tag or the like of a wireless signal in the 2.45 GHz band is used, but any of these can be utilized as the NFC tag 158. In the present embodiment, the NFC tag 158 is configured to use a tag of a wireless signal of a 13.56 MHz band which is rich in a portable mobile phone or the like.

The NFC tag 158 is disposed inside the projector body 101 and disposed on the back side of the upper surface of the projector body 101 or in the vicinity of the upper surface. Therefore, if the machine having the NFC reading function is close to the upper surface of the projector body 101, the machine can read the NFC tag 158. On the upper surface of the projector body 101, a mark 159 showing a position close to the NFC tag 158 is drawn, which is a standard when the NFC tag 158 is read.

In the present embodiment, the screen SC has a rectangular shape, and the projector 100 is disposed on the front (front) side of the screen SC. The projector 100 projects image light of a rectangular image (including a still image and a moving image), and forms a rectangular projected image on the screen SC. In the setting state of FIG. 1, since the projector 100 projects image light obliquely downward from the screen SC, the projected image formed on the screen SC generates trapezoidal distortion instead of a rectangle.

The terminal device 10 is connected to the projector 100 so that various materials can be transmitted and received by wireless communication. The wireless communication method is, for example, a short-range wireless communication method such as a wireless LAN (Local Area Network), Bluetooth (registered trademark), or UWB (Ultra Wide Band) according to the IEEE802.11 standard. Also, a wireless communication method using a mobile phone line can be used.

In the present embodiment, the terminal device 10 and the projector 100 are connected by a wireless LAN, and the control data or the content data described later is configured by wireless transmission and reception.

The terminal device 10 to which the projector 100 communicates is not limited to one. As shown in FIG. 1, the display system 1 including one projector 100 and one terminal device 10 is displayed as an example.

When the terminal device 10 and the projector 100 establish wireless communication, a MAC (Media Access Control) address, an SSID (Service Set IDentifier), an access point name, and a passphrase (password) are used. Identify each other and wait for information Pick up. Here, the information is referred to as wireless communication setting information. In the present embodiment, in a state in which the terminal device 10 and the projector 100 are wirelessly communicable, the terminal device 10 searches for the projector 100 existing within the range of wireless communication based on the wireless communication setting information. Therefore, the terminal device 10 must have the wireless communication setting information of the projector 100 in advance.

In the display system 1, the wireless communication setting information of the projector 100 is memorized in the NFC tag 158. Therefore, the terminal device 10 can obtain wireless communication setting information for wirelessly connecting to the projector 100 by reading the NFC tag 158. If the wireless communication setting information is used and the terminal device 10 establishes wireless communication with the projector 100, the terminal device 10 can thereafter operate the projector 100 by using the remote controller 70 by transmitting a wireless signal to the projector 100.

2 is a block diagram showing the configuration of the terminal device 10.

The terminal device 10 includes a control unit 20 (terminal control unit) that controls each unit of the terminal device 10. The control unit 20 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a DRAM (Dynamic Random Access Memory), and the like (not shown), and will memorize The basic control program in the ROM reads into the DRAM and is executed by the CPU to control the terminal device 10. Further, the control unit 20 functions as a display control unit 21, a communication control unit 22, and an application execution unit 23, which will be described later, by executing a program stored in the storage unit 30 (hereinafter, these members are referred to as functional blocks).

The terminal device 10 includes a storage unit 30. The memory unit 30 is a non-volatile memory device such as a flash memory or an EEPROM (Electronically Erasable and Programmable Read Only Memory), and is connected to the control unit 20. The memory unit 30 memorizes various programs or materials executed by the control unit 20. Further, the storage unit 30 stores the application 31, the NFC setting material 32, and the content material 33.

The terminal device 10 includes a wireless communication unit 40 (inter-machine wireless communication unit). The wireless communication unit 40 includes an antenna, an RF (Radio Frequency) circuit (not shown), and the like, and is connected to Control unit 20. The wireless communication unit 40 is controlled by the control unit 20 to transmit and receive various materials to and from the projector 100 in accordance with the above-described wireless communication method. The wireless communication unit 40 and the communication control unit 22 function together as a transmitting unit.

The terminal device 10 includes a display unit 51. The display unit 51 includes a display panel 52 and is connected to the control unit 20. The display unit 51 displays a frame image conforming to the display resolution of the display panel 52 in the drawing area secured by the DRAM (not shown) based on the image data input from the control unit 20, and displays the image on the display panel. 52.

The terminal device 10 includes a touch screen 53, a button portion 54, and an operation detecting portion 55. The touch screen 53 detects a contact operation with respect to the display panel 52, and outputs a position signal indicating the detected operation position to the operation detecting portion 55. The operation detecting unit 55 generates coordinate information indicating the coordinates on the touch screen 53 based on the position signal input from the touch screen 53, and outputs the coordinate information to the control unit 20.

The button unit 54 includes operation units such as buttons provided separately from the touch screen 53, and outputs an operation signal to the operation detecting unit 55 when the buttons are operated. The operation detecting unit 55 generates operation information corresponding to the operated operation unit based on the operation signal input from the button unit 54, and outputs it to the control unit 20. The touch screen 53 and the button portion 54 correspond to an operation unit.

The control unit 20 can detect the contact operation with respect to the display panel 52, the operation of each operation unit including the button, and the operation of the body of the mobile terminal device 10 based on the coordinate information or the operation information input from the operation detecting unit 55.

The terminal device 10 includes an NFC tag communication unit 61 (tag communication unit). The NFC tag communication unit 61 is a tag reader that reads NFC tags in accordance with the NFC standard and outputs the data read from the NFC tags to the control unit 20. The NFC tag communication unit 61 can at least read the passive tag. In a state in which the reading operation of the NFC tag communication unit 61 is enabled during the operation of the terminal device 10, the NFC tag 158 transmits a wireless signal for reading at a specific time. Inductive power is generated on the NFC tag by the wireless signal, and the NFC tag has sent a wireless signal In the case of the number, the NFC tag communication unit 61 receives the wireless signal of the NFC tag and decodes it, and outputs the received data to the control unit 20. Further, the NFC tag communication unit 61 may be a read/write device that can write NFC tags in addition to reading data of the NFC tag.

The control unit 20 executes the basic control program stored in the storage unit 30 to perform basic control of each unit of the terminal device 10. This control corresponds to the operating system of the terminal device 10, and the display control unit 21, the communication control unit 22, and the application execution unit 23 provide basic services to the application operating on the operating system.

The display control unit 21 controls the display unit 51 to display various screens on the display panel 52. The display control unit 21 reads out image data and the like stored in the storage unit 30, and outputs the image data to the display unit 51. The display unit 51 draws a frame conforming to the display resolution of the display panel 52 in the drawing area secured by the DRAM (not shown) based on the input image data, and drives the display panel 52 based on the drawn frame.

The communication control unit 22 controls the wireless communication unit 40 to perform wireless communication with the projector 100. The communication control unit 22 performs transmission and reception of a wireless signal of a specific frequency, and performs encoding of the transmitted data and decoding of the received data.

The application execution unit 23 executes the application 31 stored in the storage unit 30.

The memory unit 30 can memorize a plurality of applications 31. When the application 31 sets a startup condition, for example, when the icon displayed on the display panel 52 is operated, the application execution unit 23 executes the application 31 corresponding to the operated icon. The application execution unit 23 selects and executes an application 31 corresponding to the operation of the touch panel 53, the operation of the button unit 54, or the data read by the NFC tag communication unit 61 from the NFC tag.

The NFC setting data 32 determines the application 31 that is started when the NFC tag communication unit 61 reads the data from the NFC tag. The application execution unit 23 refers to the data read by the NFC tag communication unit 61 and the NFC setting data 32, and selects and executes the application 31 corresponding to the read data.

A specific configuration example of the NFC setting data 32 is shown in FIG.

3(A) is a schematic diagram showing a first configuration example of the NFC setting data 32, and FIG. 3(B) is a schematic diagram showing a second configuration example of the NFC setting data 32.

The first configuration example of FIG. 3(A) is the simplest configuration of the NFC setting material 32. The NFC setting data 32 determines an application 31 that is started when the NFC tag communication unit 61 reads data from the NFC tag. In the example of the figure, the application (1) is logged in as the executed application.

In this case, when the NFC tag communication unit 61 inserts the display data into the control unit 20, the application execution unit 23 executes an application 31 (application program) specified by the NFC setting data 32. 1)).

The NFC setting data 32 of the second configuration example shown in FIG. 3(B) corresponds to each of the plurality of applications 31, and corresponds to the contents of the data read by the NFC tag communication unit 61 from the NFC tag.

For example, when the data readable by the NFC tag 158 includes the data which is the basis for classifying the projector 100, the application 31 can be selected and executed in accordance with the model. In the example of FIG. 3(B), the application execution unit 23 selects a more suitable application 31 based on the information that the NFC tag communication unit 61 reads from the NFC tag 158 and is the basis for classifying the projector 100. . As a selection condition, for example, when the data of the NFC tag 158 has "group 1" instead of "group 2", the application (1) is selected, and when the data of the NFC tag 158 has "group 2", the application is selected. Program (2). As shown in FIG. 3(B), the NFC tag 158 of the model "1-A", "1-B", and "2-A" of the projector 100 has only the data of "Group 1", and the projector 100 The NFC tag 158 of the model "2-B" has only the data of "Group 2", and the NFC tag 158 of the model "2-C" of the projector 100 has the data of "Group 1" and "Group 2". In this case, when the model of the projector 100 is "1-A", "1-B" or "2-A", the application (1) is selected, and the model of the projector 100 is "2-B" or In the case of "2-C", select the application (2). So by using the application (1) The selection condition of the application (2) is associated with the data stored in the NFC tag 158, and the application execution unit 23 can execute the application 31 corresponding to the model. By adopting this method, even if the name of the application itself is not stored in the NFC tag, the application can be selected by the data indicating the characteristics of the model of the projector 100, so that the optimal application can be selected more flexibly. .

The content material 33 is a file containing dynamic image (image) data or still image data and which can be played by the projector 100. The content material 33 can include a plurality of moving images or still image data, and can also include sound data. When the content material is transmitted by the function of the application 31 executed by the application execution unit 23, the application 31 reads the content material 33 and transmits it via the wireless communication unit 40.

4 is a block diagram showing the construction of the projector 100.

The projector 100 is provided with a face portion (hereinafter, abbreviated as I/F) 124. The projector 100 is connected to the image supply device via the I/F unit 124. For the I/F unit 124, for example, a DVI (Digital Visual Interface) interface for inputting a digital video signal, a USB (Universal Serial Bus) interface, a LAN interface, or the like can be used. Further, in the I/F unit 124, for example, NTSC (National Television System Committee), PAL (Phase Alternation Line), and SECAM (Séquentiel Couleur À Mémoire: sequential transmission) can be used. S (Separate) image terminal of composite image signal such as color and storage), RCA (Radio Corporation of America) terminal for inputting composite image signal, D (Digital: digit) terminal for input component image signal, and the like. Further, in the I/F unit 124, a general-purpose interface such as an HDMI connector of the HDMI (High Definition Multimedia Interface) (registered trademark) standard can be used. Further, the I/F unit 124 may be an A/D (Analog/Digital) conversion circuit having an analog image signal converted into digital image data, and by VGA (Video Graphics Array) ) terminals such as analog terminals are connected to images for The composition of the device. In addition, the I/F unit 124 can transmit and receive image signals by wired communication, and can also transmit and receive image signals by wireless communication.

The projector 100 is roughly classified into an image processing system that includes a projection unit 110 (display portion) that forms an optical image and an electrical image that processes an image signal input to the projection unit 110. The projection unit 110 includes a light source unit 111, a light modulation device 112 including a liquid crystal panel 112A, and a projection optical system 113.

The light source unit 111 is provided with a light source such as a xenon lamp, an ultrahigh pressure mercury lamp, an LED (Light Emitting Diode), or a laser. Further, the light source unit 111 may include a reflector and an auxiliary reflector that guide the light emitted from the light source to the light modulation device 112. Further, the light source unit 111 may have a lens group (not shown) for improving the optical characteristics of the projected light, a polarizing plate, or a light amount that reduces the amount of light emitted from the light source to the path to the optical modulation device 112. Optical components, etc.

The light modulation device 112 includes, for example, a transmissive liquid crystal panel 112A, and the liquid crystal panel 112A receives a signal from an image processing system to be described later to form an image. In this case, the light modulation device 112 includes three liquid crystal panels 112A corresponding to the three primary colors of RGB for color projection, and the light from the light source unit 111 is separated into three colors of RGB, and the respective colors are incident on the light. Each of the liquid crystal panels 112A. The color light modulated by each liquid crystal panel 112A is synthesized by a synthetic optical system such as a cross color separation, and is emitted to the projection optical system 113.

Further, the optical modulation device 112 is not limited to the configuration using the three-transmissive liquid crystal panel 112A, and for example, three reflective liquid crystal panels may be used. Further, the optical modulation device 112 may be configured by combining one liquid crystal panel and a color wheel, using three DMDs (Digital Mirror Device), and combining one DMD and a color wheel. . Here, in the case where only one liquid crystal panel 112A or DMD is used as the light modulation device 112, a member corresponding to a synthetic optical system such as a cross color separation germane is not required. Further, in addition to the liquid crystal panel 112A and the DMD, as long as the light emitted from the light source is modulated It can be used without any problems.

The projection optical system 113 radiates the incident light modulated by the light modulation device 112 from the projection opening portion 114 (FIG. 1) using a projection lens, and images the projected image on the screen SC.

The projection unit 110 is connected to a projection optical system driving unit 121 that drives each of the motors included in the projection optical system 113 under the control of the control unit 130, and a light source that drives the light source of the light source unit 111 under the control of the control unit 130. Drive unit 122. The projection optical system drive unit 121 and the light source drive unit 122 are connected to the bus bar 105.

The projector 100 includes a wireless communication unit 156. The wireless communication unit 156 is connected to the bus bar 105. The wireless communication unit 156 includes an antenna (not shown) or an RF (Radio Frequency) circuit, and is controlled by the control unit 130 to communicate with the terminal device 10 in accordance with wireless communication specifications. The projector 100 is connected to the terminal device 10 so that various materials can be transmitted and received by wireless communication.

The NFC tag 158 of the projector 100 is connected to the bus bar 105. When the NFC tag 158 is supplied with power by the wireless signal for reading by the terminal device 10, the control unit 130 is inserted.

The image processing system included in the projector 100 is mainly configured to control the entire control unit 130 of the projector 100 as a whole, and further includes a storage unit 151, an image processing unit 125, an optical modulation device drive unit 123, and an input processing unit. 153. The control unit 130, the storage unit 151, the input processing unit 153, the image processing unit 125, and the optical modulation device drive unit 123 are connected to the bus bar 105, respectively.

The control unit 130 includes a CPU, a ROM, a RAM, a DRAM, and the like (not shown), and reads the basic control program stored in the ROM to the RAM or the DRAM, and executes the projector 100 to control the projector 100. Further, the control unit 130 functions as the projection control unit 131, the communication control unit 132, and the power supply control unit 133, which will be described later, by executing the application 31 stored in the storage unit 151.

The memory unit 151 is a non-volatile memory such as a flash memory or an EEPROM. The memory unit 151 memorizes a control program, image data, and the like used in the control of the projector 100.

Further, the storage unit 151 stores the wireless communication setting information 161. The wireless communication setting information 161 includes at least a part of the wireless communication setting information of the NFC tag 158, and may also include the wireless communication setting information of the NFC tag 158 as a whole. Moreover, the wireless communication setting information stored in the NFC tag 158 can also be copied to 160 by the control of the control unit 130.

The image processing unit 125 performs a resolution conversion process or the like for converting the image data input from the I/F unit 124 into data of a resolution suitable for the specification of the liquid crystal panel 112A of the light modulation device 112. The image processing unit 125 draws the display image displayed by the light modulation device 112 on the frame memory 126, and outputs the drawn display image to the light modulation device drive unit 123. The light modulation device drive unit 123 drives the light modulation device 112 based on the display image input from the image processing unit 125. Thereby, an image is drawn on the liquid crystal panel 112A of the light modulation device 112, and the drawn image is projected onto the screen SC as a projected image via the projection optical system 113.

Further, the image processing unit 125 performs correction processing for correcting the trapezoidal distortion of the projected image by deforming the image drawn on the frame memory 126. In the correction process, the so-called barrel distortion (cushion distortion) can also be corrected. Further, the image processing unit 125 can also perform deformation processing such as enlargement, reduction, and rotation of the image.

The projector 100 is disposed on the upper surface of the projector body 101 (FIG. 1), and is provided with an operation panel 155. The operation panel 155 is connected to the input processing unit 153. The input processing unit 153 appropriately lights or turns off the indicator light of the operation panel 155 in accordance with the operation state or the setting state of the projector 100 in accordance with the control of the control unit 130. When the button of the operation panel 155 is operated, an operation signal corresponding to the operated button is output from the input processing unit 153 to the control unit 130.

The projector 100 has an infrared light receiving unit 154 (infrared communication unit) that receives a signal from a remote controller 70 used by a user. The infrared light receiving unit 154 is provided on the front surface of the projector body 101 as shown in FIG. 2, for example, and receives an infrared signal from the remote controller 70. Infrared The line light receiving unit 154 decodes the infrared signal received from the remote controller 70, and generates an operation signal for displaying the operation content of the remote controller 70, and outputs it to the control unit 130.

Next, the functional blocks included in the control unit 130 will be described.

The projection control unit 131 controls the image processing unit 125 to draw an image on the frame memory 126 based on the image data supplied from the image supply device via the I/F unit 124. Further, when the communication control unit 132 receives the content material from the terminal device 10, the projection control unit 131 draws an image in the frame memory 126 based on the content data. Further, the projection control unit 131 controls the optical modulation device driving unit 123 to draw an image drawn on the frame memory 126 on the liquid crystal panel 112A of the optical modulation device 112. The image of the liquid crystal panel 112A drawn on the light modulation device 112 is projected onto the screen SC as a projected image via the projection optical system 113.

The communication control unit 132 controls the wireless communication unit 40 to perform wireless communication with the terminal device 10. The communication control unit 132 establishes wireless communication with the terminal device 10, and receives control data or content data transmitted by the terminal device 10, and processes the received data. For example, when the content data is received by the communication control unit 132, the content data is temporarily stored in the RAM or the storage unit 151 of the control unit 130, and is projected to the screen SC by the projection control unit 131.

The power supply control unit 133 switches the operation state of the projector 100 between the normal operation state and the standby state. In the normal operation state, the components included in the projector 100 are in a state in which at least the projection unit 110 can be projected. That is, power is supplied to each unit of the projection unit 110 and each unit constituting the image processing system. In the normal operation state, the light source of the light source unit 111 is turned off or the brightness is lowered in a state where the image projected by the projection unit 110 is not present.

In the standby state, at least the control unit 130, the input processing unit 153, and the infrared light receiving unit 154 operate to detect the operation of the power button and the state of the infrared signal from the remote controller 70. The respective portions of the projection unit 110, the projection optical system driving unit 121, the light source driving unit 122, the optical modulation device driving unit 123, the image processing unit 125, and the frame memory 126 can be used. The power supply is disconnected or set to a low power state. Further, the power supply to the memory unit 151 and the wireless communication unit 156 can be turned off or set to a low power state. In the present embodiment, the power supply to the wireless communication unit 156 is turned off in the standby state. Therefore, the amount of power consumed by the projector 100 in the standby state is lower than that in the normal operation state.

In Fig. 5, a specific configuration example is shown for the main part of the control system of the projector 100.

The SoC (System on Chip) 100a shown in FIG. 5 is an integrated circuit in which a part of the functional blocks shown in FIG. 4 is integrated, and at least the control unit 130 and the input processing unit 153 are mounted. Further, the memory unit 151 may be included in the SoC 100a, or the image processing unit 125 and the frame memory 126 may be mounted on the SoC 100a. Furthermore, the projection optical system drive unit 121, the light source drive unit 122, and the optical modulation device drive unit 123 may be mounted. These departments are installed, for example, as the IP core (Intellectual Property Core) of the SoC100a.

When the SoC 100a is in the standby state, by stopping a part of the CPU core or suppressing the operating frequency to be low, the amount of power consumption is lower than the normal operating state. In the standby state, the SoC 100a can detect the insertion of the infrared light receiving portion 154, the operation panel 155, and the NFC tag 158 from the insertion terminal (the signal input terminal having the function of detecting the insertion signal) 100b.

When the SoC 100a detects the input of the insertion signal to the insertion terminal 100b, specifically, the change of the potential of the insertion terminal 100b in the standby state, the SoC 100a returns to the normal operation state. As shown in FIG. 5, the infrared light receiving unit 154 includes a light receiving element 154a made of a photoelectric transistor or a photodiode, and a detecting circuit 154b for detecting a light receiving state of the light receiving element 154a. When the detection circuit 154b drives the light receiving element 154a and the light receiving pattern of the infrared light detected by the light receiving element 154a coincides with the pattern of the transmission signal of the remote controller 70, an insertion signal is input to the insertion terminal 100b.

The operation panel 155 has a button substrate 155a connected to the above various buttons. button The substrate 155a may be constituted by a mechanical button that is turned on by, for example, operation by a button, or a flat button whose printed wiring is electrically connected to each other, and is energized according to the operation of the button, and an insertion signal is input to the insertion terminal 100b. Further, the key substrate 155a may not output an insertion signal when all the keys provided in the operation panel 155 are operated. For example, in the standby state of the SoC 100a, the button substrate 155a may be configured to input an insertion signal to the insertion terminal 100b when the power button of the operation panel 155 is operated, and not to input an insertion signal even if other buttons are operated.

The NFC tag 158 has an antenna 158a and a tag IC 158b. The tag IC 158b is activated by the inductive current flowing through the antenna 158a by reading the wireless signal from the device (for example, the terminal device 10) of the NFC tag 158. The tag IC 158b includes a ROM that memorizes wireless communication setting information and the like, and a control unit that performs wireless communication using the antenna 158a. The tag IC 158b starts to operate when the induced current of the antenna 158a flows, and performs wireless communication with the terminal device 10 or the like to transmit wireless communication setting information and the like. Further, when the tag IC 158b is activated by the induced current of the antenna 158a, an insertion signal is input to the insertion terminal 100b.

In the standby state, the SoC 100a inputs an insertion signal when any of the following phenomena occurs: the infrared light receiving unit 154 receives the infrared signal of the remote controller 70, the button of the operation panel 155 is operated, and the NFC tag 158 is read. The SoC 100a can detect the insertion signal of the insertion terminal 100b in the standby state, and can stop the components of other functions, thereby effectively suppressing the amount of power consumption.

The power supply control unit 133 controls the power supply state to each of the SoC 100a and the other projectors 100, and controls the transition to the standby state and the recovery from the standby state to the normal operation state. The triggering of the transition from the normal operation state to the standby state is the input state of the image data of the I/F section 124, the operation of the operation panel 155, the operation by the remote controller 70, and the control by the wireless communication section 156. Information, etc. Further, the trigger for the recovery from the standby state to the normal operation state is the input of the insertion signal to the insertion terminal 100b as described above.

In the display system 1, when the operation of bringing the terminal device 10 close to the projector main body 101 is performed, the NFC tag communication unit 61 of the terminal device 10 reads the NFC tag 158. At this time, if an induced current flows through the antenna 158a by the wireless signal transmitted from the NFC tag communication unit 61, an insertion signal is input to the insertion terminal 100b. Therefore, when the projector 100 is brought close to the terminal device 10 in the standby state, the projector 100 returns to the normal operation state from the standby state.

Thereby, since the power supply to the wireless communication unit 156 of the projector 100 is started, and the wireless communication unit 156 is in a state of wireless communication, the projector 100 and the terminal device 10 can establish wireless communication.

That is, even if the projector 100 stops the wireless communication unit 156 in the standby state, the terminal device 10 can read the NFC tag 158 to establish wireless communication with the terminal device 10. In this case, there is no operation for causing the projector 100 to return to the normal operation state from the standby state in advance. Therefore, the projector 100 and the terminal device 10 can be quickly connected in a simple operation, and the amount of power consumption of the projector 100 can be suppressed.

6 is a flow chart showing the operation of the display system 1. FIG. 6(A) shows the operation of the projector 100, and FIG. 6(B) shows the operation of the terminal device 10.

At the beginning of the operation of FIG. 6, the projector 100 is in a standby state.

The projector 100 waits for an insertion signal to the insertion terminal 100b (step S11), and stops supplying power to each unit to maintain the standby state until the insertion signal is input (step S11; NO).

When the user holds the terminal device 10 and reads the NFC tag 158 close to the upper surface of the projector body 101 (step S21), an insertion signal is input to the insertion terminal 100b in the projector 100 (step S11; YES).

The projector 100 returns to the normal operation state in response to the insertion signal (step S12), thereby activating the wireless communication unit 156 (step S13).

On the other hand, the terminal device 10 is derived from the NFC tag 158 by the NFC tag communication unit 61. Information is obtained (step S22). The information obtained in step S22 includes wireless communication setting information. The terminal device 10 refers to the NFC setting data 32 based on the acquired information, and selects the activated application 31 (step S23).

When the selected application 31 is executed in the terminal device 10 (step S24), wireless communication is established based on the wireless communication setting information acquired in step S22 by the function of the application 31 (step S25). Further, in the projector 100, the wireless communication unit 156 operates to establish wireless communication with the terminal device 10 (step S14).

The terminal device 10 displays the operation screen by the function of the application 31 (step S26), and waits for the operation (step S27; NO). The operation screen is provided with a screen for simulating an operation button or the like. When the icons or the like are touch-operated, the terminal device 10 detects the operation by the touch screen 53. When the operation is detected (step S27; YES), the terminal device 10 generates control data corresponding to the operation, and transmits it to the projector 100 via the wireless communication unit 40 (step S28).

Here, the terminal device 10 determines whether or not the operation detected in step S27 is an instruction to end the operation of the application 31 (step S29). When it is not the case of the operation of the end instruction (step S29; NO), the terminal device 10 returns to step S27 and waits for the next operation. When the operation of the instruction is ended (step S29; YES), the terminal device 10 ends the execution of the application 31 and disconnects the wireless connection with the projector 100 (step S30), and ends the present process.

The projector 100 receives the control data transmitted from the terminal device 10 (step S15), and determines whether the received control data is data indicating the end of the operation of the projector 100 by the terminal device 10 (step S16). When it is not the case of indicating the end of the data (step S16; NO), the projector 100 executes processing corresponding to the control data (step S17), and returns to step S15 to wait for reception of the next control data.

Moreover, when the control data received from the terminal device 10 is an instruction to end (step S16; YES), the projector 100 shifts to the standby state (step S18), and the present process ends.

FIG. 7 is a view showing an example of an image displayed on the display panel 52 of the terminal device 10. Fig. 7(A) shows an example of an operation screen, and Figs. 7(B) and (C) show another example of an operation screen. Further, Fig. 7(D) shows an example of a display screen when the operation screen indicates the transmission of the content material 33. The operation screens 63, 64, and 65 and the content playback screen 66 of FIGS. 7(A) to (D) are displayed by the application execution unit 23 executing the application 31.

The operation screen 63 shown in FIG. 7(A) is provided with a function icon group 63a on the upper portion of the display panel 52, and a direction indication icon 63b is disposed in the center of the display panel 52. The function icon group 63a includes icons corresponding to functions such as power-off of the projector 100, switching of image sources projected by the projector 100, volume adjustment, and the like. The icon of the power-off corresponds to an indication of the end of the operation by the application 31. Further, the direction indication icon 63b is used for volume adjustment, selection of candidates to be displayed in a list, and the like.

In Figs. 7(B) and (C), an example of an operation screen suitable for operation of the projector 100 of more functions is shown. Although the operation screen 63 of FIG. 7(A) includes the function icon group 63a and the direction indication icon 63b including three icons, when the projector 100 having a large function is operated, it is preferable that the terminal device 10 displays more. icon. In this case, the operation screen 64 of Fig. 7(B) is displayed on the terminal device 10, for example.

On the operation screen 64, the same icon group 63a and direction indication icon 63b as the operation screen 63 are arranged. Further, a page switching icon 64c is disposed on the operation screen 64. When the page switching icon 64c is operated, the display screen jumps to the operation screen 65 of FIG. 7(C). On the operation screen 65, in addition to the direction indication icon 63b, a function icon group 63d including function icons different from the function icon group 63a is disposed. Further, a page switching icon 65c for instructing a jump to the operation screen 64 of Fig. 7(B) is arranged.

In this manner, the terminal device 10 can use the operation screens 64 and 65 composed of a plurality of pages by the function of the application 31, thereby making it possible to perform operations using a large number of icons.

The operation screen 63 is suitable for the projector 100 having less functions, and the operation screens 64, 65 are suitable for the projector 100 of more functions. Therefore, the terminal device 10 is preferably based on the projector 100 The display operation screen 63 and the operation screens 64 and 65 are switched. As a method of realizing the same, three methods are exemplified in the present embodiment.

The first method is a method in which the application 31 included in the terminal device 10 switches between displaying different operation screens in accordance with the model of the projector 100. In this case, the application 31 determines the model of the projector 100 based on the wireless communication setting information acquired by the NFC tag communication unit 61, and selects an operation screen corresponding to the determined model. For example, the application 31 can display the operation screen 63 and the operation screens 64 and 65, and display any one of the operation screens corresponding to the model of the projector 100. In this method, since the common application 31 can be used regardless of the model of the projector 100, there is an advantage that the management of the application 31 becomes easy.

As shown in FIG. 3(B), the second method is a method in which the terminal device 10 stores a plurality of applications 31 in the storage unit 30 and activates different application programs 31 depending on the model of the projector 100. Each application 31 has a different operation screen. For example, the application (1) of FIG. 3(B) displays an operation screen 63, and the application (2) displays operation screens 64 and 65. In this method, the user can install the application 31 corresponding to the model of the projector 100 to be used in the terminal device 10. Therefore, there is an advantage that the data capacity of the application 31 stored in the memory unit 30 can be suppressed.

The third method is a method of calling other applications by the application that is started after the NFC tag communication unit 61 reads the NFC tag 158. The initially launched application does not have the function of displaying an operation screen, and determines the model of the projector 100 based on the wireless communication setting information, thereby calling another application corresponding to the determined model. Moreover, the called application has a plurality of functions, so that different operation screens can be displayed separately. For example, the application 31 that displays the operation screen 63 and the application 31 that displays the operation screens 64 and 65 are selected and called. In this method, since the processing of selecting the application 31 according to the model of the projector 100 is complicated and can be easily realized, it is possible to easily cope with the increase in the height, function, and variety of the application 31. advantage.

Further, the content material 33 stored in the terminal device 10 can be transmitted to the projector 100 by the operations performed on the operation screens 63, 64, 65, etc., and displayed on the projector 100. An example of a screen for transmission and display of the content material 33 is shown in Fig. 7(D). In the content playback screen 66, in addition to displaying the video or image being played on the entire screen, a screen switching icon 66a is disposed in order to operate the projector 100. When the screen switching icon 66a is operated, the screen being displayed is switched to the operation screens 63, 64, 65, and the like. The screen switching icon 66a is preferably displayed on the corner of the display panel 52 so as not to obstruct the viewing of the image.

As described above, the display system 1 of the present embodiment includes the terminal device 10 and the projector 100. The projector 100 includes a projection unit 110 that displays an image, and includes an NFC tag 158, a wireless communication unit 156 that wirelessly communicates with the terminal device 10, and a control unit 130 that operates the projector 100 at least in a normal operation. Switch between status and standby status. When the control unit 130 detects that the NFC tag 158 has communicated with the terminal device 10 in the standby state, the control unit 130 changes the operation state to the normal operation state, and the wireless communication unit 156 returns to the normal operation state from the standby state to establish wireless communication with the terminal device 10. . Thereby, when the projector 100 is in the standby state, the wireless communication between the projector 100 and the terminal device 10 can be quickly started by performing the operation of reading the NFC tag 158. Therefore, it is possible to suppress the amount of power consumption of the projector 100 during which wireless communication is not established, and it is not necessary to perform complicated operations, that is, to connect the terminal device 10 and the projector 100.

Further, the NFC tag 158 holds at least the wireless communication setting information of the wireless communication by the wireless communication unit 156, and the wireless communication unit 156 establishes wireless communication with the terminal device 10 that uses the wireless communication setting information of the NFC tag 158. Therefore, wireless communication can be quickly established based on the information possessed by the NFC tag 158. Further, since the NFC tag 158 can store, for example, the identification type information (identification information) as the type of the projector 100, the terminal device 10 can recognize the model of the projector 100. Thereby, the terminal device 10 can perform processing corresponding to the model of the projector 100.

Moreover, the control unit 130 can access the wireless communication unit 156 and the projection unit in the normal operation state. The power supply is performed at 110, and the power supply to the wireless communication unit 156 and the projection unit 110 is turned off in the standby state, and the communication of the NFC tag 158 is awaited. Therefore, in the standby state, the reading of the NFC tag 158 can be waited for, and the amount of power consumption can be suppressed.

Further, the projector 100 includes an infrared light receiving unit 154 that receives an infrared signal, and the control unit 130 can receive the infrared signal by the infrared light receiving unit 154 in a standby state. Therefore, in the standby state, both the reading of the NFC tag 158 and the operation of the remote controller 70 can be waited for.

Further, the terminal device 10 includes an NFC tag communication unit 61 that reads the NFC tag 158, a wireless communication unit 40 that wirelessly communicates with the projector 100, and a storage unit 30 that stores the application 31. The terminal device 10 establishes wireless communication with the projector 100 by the wireless communication unit 40 based on the information read from the NFC tag 158 by the NFC tag communication unit 61 by the control unit 20. Furthermore, the control unit 20 reads and executes the application 31 corresponding to the information read from the NFC tag 158 from the storage unit 30, and transmits control data for controlling the projector 100 from the wireless communication unit 40. Thereby, wireless communication is established between the projector 100 and the terminal device 10 by the simple operation of reading the NFC tag 158, and the projector 100 can be operated by the function of the application 31 thereafter.

Further, the terminal device 10 includes a projection unit 110 for displaying a screen, a touch screen 53 for accepting an operation, and a button portion 54. The control unit 20 displays the operation screen for controlling the projector 100 by the projection unit 110 by the function of the application 31, and transmits the control data based on the operation detected by the operation unit in the display of the operation screen. Thereby, the projector 100 can be operated using, for example, the operation screens 63, 64, 65 shown in FIGS. 7(A) to (C). Therefore, the projector 100 can be operated even without using the remote controller 70 dedicated to the projector 100. The terminal device 10 can also be, for example, a smart phone carried by a user. Therefore, it is possible to operate various projectors with the smart phone held by the user without using the remote controller 70.

Further, the control unit 20 may be a plurality of applications 31 that can display the different operation screens by the projection unit 110. In this case, it can also be based on passing NFC tags. The information read from the NFC tag 158 by the message unit 61 is selected and executed by the application 31. In this case, a plurality of types of operation screens 63, 64, 65 can be used separately by a plurality of applications 31.

Moreover, the control unit 20 can display a plurality of operation screens by the function of the application 31, and can also display an operation screen corresponding to the information read from the NFC tag 158 by the NFC tag communication unit 61 on the display panel 52. . Further, the control unit 20 may execute an application when the NFC tag communication unit 61 reads the NFC tag 158, and the application 31 that displays the operation screen is called and activated by the function of the application.

As described above, the projector 100 switches from the standby state to the normal operation state after detecting that the NFC tag 158 has been read by the insertion signal. Here, when the state in which the wireless communication unit 156 does not establish wireless communication with the terminal device 10 continues, it may be switched to the standby state.

Fig. 8 is a flow chart showing the operation of the projector 100 according to a modification of the embodiment. The action of Fig. 8 can be performed instead of the action shown in Fig. 6(A). The same steps as those in FIG. 6(A) are denoted by the same step numbers, and the description thereof will be omitted.

The projector 100 returns to the normal operation state in response to the insertion signal (step S12), thereby activating the wireless communication unit 156 (step S13), and thereafter, determining whether or not the wireless signal has been received (step S41). In step S41, it is determined whether or not the terminal device 10 can receive the wireless signal transmitted to establish the wireless communication.

Here, when the wireless signal has been received (step S41), the projector 100 shifts to step S14 to establish wireless communication.

On the other hand, when the wireless signal is not received (step S41; NO), the projector 100 determines whether or not a predetermined time has elapsed since the wireless communication unit 156 was turned on (step S42). When the set time has not elapsed (step S42; NO), the process returns to step S41. When the predetermined time has elapsed (step S42; YES), the process proceeds to step S18 and returns to the standby state.

In this operation, even if it is detected that the NFC tag 158 has been read, if the wireless communication with the terminal device 10 is not established, the operation returns to the standby state. Therefore, even if the NFC tag 158 has been read, the amount of power consumption when it is not necessary to switch to the normal operation state can be suppressed. Specifically, there is a case where the user accidentally reads the NFC tag 158, and the application 31 is ended, or the terminal device 10 to which the application 31 is not installed reads the NFC tag 158 or the like. In such a case, since it is not necessary to switch the projector 100 to the standby state again, it is possible to further improve the convenience.

In addition, the embodiment described above is an embodiment of the present invention, and the embodiment of the present invention is not limited thereto, and various modifications can be made without departing from the spirit and scope of the invention. For example, although a configuration in which one terminal device 10 and one projector 100 are wirelessly communicated and operated is displayed, a plurality of terminal devices 10 may control one or a plurality of projectors 100. Further, a plurality of projectors 100 can be controlled by one terminal device 10. Furthermore, a configuration in which the terminal device 10 can be recognized in the projector 100 may be employed.

Further, for example, in the above-described embodiment, the projector 100 that projected before the screen SC is projected as an example of the display device, but the present invention is not limited thereto. For example, a rear projection (back projection) type projector projected from the back side of the screen SC can be employed as the display device. Further, a liquid crystal monitor or a liquid crystal television that displays an image on a liquid crystal display panel may be used as the display device. A PDP (Plasma Display Panel), a CRT (Cathode Ray Tube) display, an SED (Surface-conduction Electron-emitter Display), or the like can be used as the display device. Further, a monitor device for displaying an image on an organic EL display panel such as an OLED (Organic Light-emitting diode) or an OEL (Organic Electro Lumine-scence) display can be used. Or a self-illuminating display device such as a television receiver. When the present invention is applied to a configuration including the display device, a useful effect can be obtained in the same manner as in the above embodiment.

Further, in the above-described embodiment, the input device of the present invention is described as a terminal device having a flat terminal device body 11 and a portable terminal device 10 operated by a user. However, the present invention is not limited thereto. As the terminal device 10, for example, a portable game machine, a portable playback device that plays music or video, or the like can be used. Furthermore, the terminal device 10 may be configured to have a hardware keyboard or the like other than the display panel 52.

Further, the NFC tag 158 is described as being provided in the projector main body 101, but may be provided in a different casing from the projector main body 101. In this case, the different housings and the projector body 101 are connected by cables. By this point, the NFC tag 158 can be disposed at a position spaced apart from the projector body, which is more convenient to use.

Further, each of the functional units shown in FIGS. 2 and 4 is a functional component, and the specific embodiment is not particularly limited. In other words, it is not necessary to install a hardware that individually corresponds to each functional unit, and it is of course possible to implement a function of a plurality of functional units by executing one application. Further, one of the functions realized by the software in the above embodiment may be implemented by hardware, or a part of the function realized by the hardware may be implemented by software. In addition, the specific details of the other parts of the display system 1 can be arbitrarily changed without departing from the gist of the invention.

1‧‧‧Display system

10‧‧‧ Terminal devices

11‧‧‧ Terminal device body

52‧‧‧ display panel

70‧‧‧Remote control

100‧‧‧Projector (display device)

101‧‧‧Projector body

114‧‧‧Projection opening

155‧‧‧Operator panel

158‧‧‧NFC tags (wireless tags)

159‧‧‧ mark

SC‧‧‧ screen

Claims (12)

A display device, comprising: a display unit for displaying an image; a wireless tag; a wireless communication unit that wirelessly communicates with an external terminal device; and a control unit that can operate the display device at least in a normal state And switching between the operating state and the power saving state; and when the control unit detects that the wireless tag has communicated with the terminal device in the power saving state, the control unit converts the operating state to the normal operating state; and the wireless communication unit saves power from the power saving The state is restored to the normal operation state described above, and wireless communication is established with the terminal device. The display device of claim 1, wherein the wireless tag maintains at least wireless communication setting information of wireless communication of the wireless communication unit; and the wireless communication unit is configured to use the wireless communication setting information included in the wireless tag. Establish wireless communication between. The display device of claim 1 or 2, wherein the wireless tag is an NFC tag and includes identification information identifying a type of the display device. The display device according to any one of claims 1 to 3, wherein the control unit supplies power to the wireless communication unit and the display unit in the normal operation state, and disconnects the wireless device in the power saving state. The power supply of the communication unit and the display unit waits for communication of the wireless tag. The display device of claim 4, wherein When the control unit is switched from the power-saving state to the normal operation state, the control unit starts to supply power to the wireless communication unit, and then switches to the state in which the wireless communication unit does not establish wireless communication with the terminal device. The above provincial power state. The display device according to any one of claims 1 to 5, comprising an infrared communication unit that receives an infrared signal; and wherein the control unit can perform reception of an infrared signal by the infrared communication unit in the power saving state. A terminal device, comprising: a tag communication unit that reads a wireless tag; an inter-machine wireless communication unit that wirelessly communicates with an external device; a memory unit, a memory application thereof; and a terminal control unit that is based on The tag communication unit reads information from the wireless tag, and the wireless communication unit between the device establishes wireless communication with the external device, and reads an application corresponding to the information read from the wireless tag from the memory unit. The program is executed and the control information of the external device is sent from the wireless communication unit between the machines. The terminal device of claim 7, comprising: a display portion, a display screen thereof; and an operation portion that accepts an operation; and the terminal control portion is displayed by the display portion for controlling the above by the function of the application program The operation screen of the external device transmits the control information based on an operation detected by the operation unit in the display of the operation screen. The terminal device of claim 8, wherein the terminal control unit is configured to execute the plurality of applications that display the different operation screens on the display unit; The application is executed based on the information read by the tag communication unit from the wireless tag. The terminal device of claim 8, wherein the terminal control unit displays information that is read from the wireless tag by the tag communication unit among a plurality of the operation screens that can be displayed by the function of the application program. The above operation screen is displayed on the display unit. The terminal device of claim 8, wherein the terminal control unit executes the first application when the tag communication unit reads the wireless tag, and performs the function corresponding to the first application by the function of the first application The second application of the information read by the above wireless tag. A display system comprising: a display device and a terminal device; and the display device includes: a display unit that displays an image; a wireless tag; a wireless communication unit that wirelessly communicates with the terminal device; and a control unit And switching the operation state of the display device to at least between the normal operation state and the power saving state; and when the control unit detects that the wireless tag has communicated with the terminal device in the power saving state, converting the operation state to the normal state In an operation state, the wireless communication unit establishes wireless communication with the terminal device from the power saving state to the normal operation state, and the terminal device includes a tag communication unit that reads the wireless tag of the display device; a wireless communication unit that wirelessly communicates with the display device; a memory unit, a memory application; and The terminal control unit establishes wireless communication with the display device by the device-to-device wireless communication unit based on the information read from the wireless tag by the tag communication unit, and reads from the memory unit corresponding to the wireless device The application of the information read by the tag is executed and the control information of the display device is transmitted from the wireless communication unit between the devices.